1 /**************************************************************************
2 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
4 * Author: The ALICE Off-line Project. *
5 * Contributors are mentioned in the code where appropriate. *
7 * Permission to use, copy, modify and distribute this software and its *
8 * documentation strictly for non-commercial purposes is hereby granted *
9 * without fee, provided that the above copyright notice appears in all *
10 * copies and that both the copyright notice and this permission notice *
11 * appear in the supporting documentation. The authors make no claims *
12 * about the suitability of this software for any purpose. It is *
13 * provided "as is" without express or implied warranty. *
14 **************************************************************************/
18 #include "AliMUONSegmentationSlatN.h"
19 #include "AliMUONSegmentationSlatModuleN.h"
22 #include "TObjArray.h"
24 #include <Riostream.h>
26 //___________________________________________
27 ClassImp(AliMUONSegmentationSlatN);
29 AliMUONSegmentationSlatN::AliMUONSegmentationSlatN()
31 // Default constructor
35 AliMUONSegmentationSlatN::AliMUONSegmentationSlatN(Int_t nsec)
36 : AliMUONSegmentationSlat(nsec)
38 // Non default constructor
42 Float_t AliMUONSegmentationSlatN::Dpx(Int_t /*isec*/) const
45 // Returns y-pad size for given sector isec
49 Float_t AliMUONSegmentationSlatN::Dpy(Int_t isec) const
52 // Returns x-pad size for given sector isec
53 // isec = 100*islat+iregion
58 return Slat(islat)->Dpy(iregion);
63 void AliMUONSegmentationSlatN::GlobalToLocal(
64 Int_t ix, Int_t iy, Int_t &islat, Int_t &ixlocal, Int_t &iylocal)
67 // Perform local to global transformation for pad coordinates
76 // Find slat number (index) and iylocal
77 for (Int_t i=0; i<fNSlats; i++) {
78 if (ix <= Slat(i)->Npx()) {
79 Int_t isec=Slat(i)->Sector(ix,1);
80 iytemp-=Slat(i)->Npy()*(*fNDiv)[isec]/(*fNDiv)[1];
82 if (iytemp <= 0) break;
90 void AliMUONSegmentationSlatN::LocalToGlobal(
91 Int_t islat, Int_t ixlocal, Int_t iylocal, Int_t &ix, Int_t &iy)
93 // Local to global transformation for pad coordinates
99 // Find iy global by adding iy offset from slats below
100 for (i=0; i<islat; i++) {
101 if (ixlocal <= Slat(i)->Npx()) {
102 Int_t isec=Slat(i)->Sector(ixlocal,1);
103 iy+=Slat(i)->Npy()*(*fNDiv)[isec]/(*fNDiv)[1];
107 // Perform symmetry transformation
112 void AliMUONSegmentationSlatN::
113 GetPadI(Float_t x, Float_t y, Float_t z, Int_t &ix, Int_t &iy)
115 // Returns pad coordinates for given set of space coordinates
118 Float_t xlocal, ylocal;
119 // Transform to local coordinates
120 AliMUONSegmentationSlat::GlobalToLocal(x,y,z,islat,xlocal,ylocal);
121 Slat(islat)->GetPadI(xlocal, ylocal, ix, iy);
122 // add to local iy offfset from slats below
123 for (i=0; i<islat; i++) {
124 if (ix <= Slat(i)->Npx()) {
125 Int_t isec=Slat(i)->Sector(ix,1);
126 iy+=Slat(i)->Npy()*(*fNDiv)[isec]/(*fNDiv)[1];
129 // Determine sign depending on quadrant
130 ix=ix*Int_t(TMath::Sign((Float_t)1.,x));
133 AliMUONSegmentationSlatModule* AliMUONSegmentationSlatN::
136 // Factory method for slat module
137 return new AliMUONSegmentationSlatModuleN(4);